@evenwicht@lemmy.sdf.org complained about this the other day, but I just experienced it first-hand.

A lemmy.world user got instance-banned on lemmy.world, and the result was their post in one of my communities created and based on lemmy.sdf.org got automatically removed. How the fuck is that a sanctioned inter-instance functionality?

That’s absolutely squirrel turds to me. It sort-of makes sense if my own instance admin were to ban that user, but reaching across instance lines to nuke posts is just wild. That feels like it blurs the lines of what federation should entail, and also is just rife for abuse.